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No colors known? (Posted on 2004-08-04) Difficulty: 3 of 5
A friend told me about a chess game he had seen. At certain moment, the only pieces on board were a Queen at h8, a Rook at g6, and the Kings at h6 and g8. He didn't remember what color was each piece, but it can be worked out... how?
      +---+---+---+---+---+---+---+---+
      |   |   |   |   |   |   | K | Q | 8
      +---+---+---+---+---+---+---+---+
      |   |   |   |   |   |   |   |   | 7
      +---+---+---+---+---+---+---+---+
      |   |   |   |   |   |   | R | K | 6
      +---+---+---+---+---+---+---+---+
      |   |   |   |   |   |   |   |   | 5
      +---+---+---+---+---+---+---+---+
      |   |   |   |   |   |   |   |   | 4
      +---+---+---+---+---+---+---+---+
      |   |   |   |   |   |   |   |   | 3
      +---+---+---+---+---+---+---+---+
      |   |   |   |   |   |   |   |   | 2
      +---+---+---+---+---+---+---+---+
      |   |   |   |   |   |   |   |   | 1
      +---+---+---+---+---+---+---+---+
        a   b   c   d   e   f   g   h
If the Rook had been at g7, what would have been the colors?


See The Solution Submitted by Federico Kereki    
Rating: 3.1429 (7 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution, part 2 | Comment 5 of 17 |
(In reply to Solution, part 1 by stan)

The rook, queen, and king at g8 must all be white, with the black king at h6.  The last move was for white to advance a pawn from h7 to h8, exchanging it for a queen for checkmate.
  Posted by stan on 2004-08-04 12:16:37

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